SnapCalendar.io's answer:
A clean, intuitive interface that simplifies scheduling and management tasks.
Calendar Generator - 12 weeks on one physical page
Appointment Reminder - Automated SMS/Voice and Email Reminders.
Barcelona UX-Kalender - The Barcelona UX Calendar is the first free online & printable calendar that combines UX and graphic design in a single practical & beautiful tool.
Reservio - Reservio is a simple online booking and appointment scheduling application.
Tabit - TabIt is a full-featured program for creating, playing, and printing guitar, bass, or banjo...
Square Appointments - Add an online booking link. Easily embed the customizable widget directly on your website. Any changes to your online scheduling, prices, or services update automatically.